Mamamoo (Korean: 마마무; commonly stylized in all caps) is a South Korean girl group formed and managed by RBW. The group is composed of four members: Solar, Moonbyul, Wheein, and Hwasa. Known for their strong live vocals, harmonies, and writing much of their material, they are recognized as one of the premier girl groups in K-pop. They are highly regarded in the industry for their talent and ability to cross multiple genres with their music; from retro, jazz, and R&B concepts in their early years to more contemporary hip-hop, as well as emotional ballads. Since their debut in 2014, they have been noted for challenging conventional beauty standards, breaking gender stereotypes, and conducting themselves in ways that most typical K-pop stars do not